Vacuum-cleaner.



F. C. MASON.

VACUUM CLEANER.

APPLICATION men DEC- 6, 1915.

1,323; Patented Apr.29,1919.

2 SHEETS-SHEET l.

W I INESSES WLQ; 57

F. C. MASON. VACUUM CLEANER: APPLICATION FILED DEC- 5. l9l5.

Patented Apr. 29,1919.

2 SHEETS-SHEET 2.

' IQVEVTOR. FPANCIJ c. Mfljw. BY

NEY.

WITNESSES A TTOR wheels.

L i i -qweat? whom a concern:

it lmown that l, limiters Q. liciason, citizen of the United States, residing at Grand Michigan, have invented certain new and useful improvements in Vacation-Cleaners, of which-the following is a specification.

This invention relates to an improved vacuum cleaner and particularly those which have a rotary brush in the nozzle thereof.

The main objects of this invention are:

First, to provide an electric or power driven vacuum cleaner within which the rotary brush is driven independently of the fan motor.

Second, to provide an electric vacuum cleaner where the brush is geared so as to turn faster than the brush floor Third, to provide in an electric vacuum cleaner a variable setting means for the nozzle of the cleaner.

Further ohjects relating to details and economies of construction and operation will definitely appear from the detailed description to follow.

l accomplish the objects of my invention by the devices and .means described in the following specification. The invention is clearly defined and ointed out in the claims;

A structure whic is a preferred embodiment of my invention is clearly illustrated -in the accompanying drawing, forming a part of this specification, in which: a

Figure l is a perspective view of my im proved -vacuum cleaner with the fan and motor removed. I a

Fig. H is a transverse vertical sectlon with the motor removed, taken on a line corresponding to the section line 2.2 of Fig. HI.

Fig. 1H isan inverted plan view of the suction nozzle of my improved cleaner with the brush in place, the remainderof the machine being broken -away.

Fig. liV is an enlar ed detail vertical section showing the adjustment and driving mechanism of the rotary brush, taken on a line corresponding to the broken line H of Specification of Letters 6 i is detail ve' tion through the hru idler c wheel and norrzie a'djustif g means, ta. 1 on the hrohen line 55 of igs. Ill and VH1 Fig. VI is an enlarged detail vertical sec tion through one end of the suction nozzle, showing the connection of the bearing re 'tainer to the driving wheel and adjusting eccentric, taken on the line 6-6 of Figs. ill

and ill].

Fig. Vlill is an enlarged detail vertical section throughthe' adjusting eccentric, showmg how the stationary bevel gear is pinned, ta on on a line corresponding to the section line 7-7 of Fig, 1V. Fig. VH1 is an enlarged detail vertical section through one end of the suction nozzle, showing how the adjusting eccentric is set, taken on a line corresponding to the section line 8'8 of Fig. V.

In the drawing, similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawings, 1 consider the reference characters representing the parts themselves, in which the vacuum cleaner casing or housing consists of anozzle 1, a fan chamber 2 in which revolves the suction fan trailing. caster 10, partially shown in Fig. lll. Between the two front wheels 8 and 9 and carried by them is the rotary brush 152. Both of the wheels 8 and 9 are carried in journal hearings in the adjusting eccentrics 1.3 and M respectively. These adjusting ecce'ntrics are rotatably mounted in the end, I

' trio 14 and ofi'set from the center thereof and alined with the bushing 16 is a stud 17 on which turns the rotary brush bushing 18, the idler driving wheel 9 turning on said .hushing.

The driving wheel 8 contains the mechanism for driving the rotary brush 12, the mechanism here used being a difierential gearing. This movement comprises two in-. termediate bevel gears 19 rotatahly mounted on the two end trunnion shafts 20 of the trunnion 21. The trunnion shafts are so curely fastened in bushings 22, said bushings being rigidly held in the rim of the driving wheel 8. Through the trunnion 21 and turning therein is the rotary brush shaft 23. The outer end of the shaft 23 is loosely carried by the stationary bevel gear 24, said gear meshing with the intermediate hevel gears 19 and rigidly secured in the bushing 16 by a driving fit. 0n the other end of the rotary brush shaft is the rotary brush driving gear 25.1 This gear meshes with the intermediate hovel gears 19, The hub of said gear 25 passes through the driving wheel cover 26 and into the'rotary lorush 12 and is fastened thereto by the pin 27 securely connecting the gear 25 and the shaft 23 to said roll.

ln the adjusting eccentric '13 the bushing 16 is prevented from rotation within said ec centric by pin 28 passing through the slot 29 in said bushing. The other end of the rotary brush 12 is securely fastened by pin 30 to bushing 18.

1t is evident, therefore, that when driving wheel 8 revolves, gear 2 1 osing heldstationary, the intermediate gears will rotate, thus driving the rotary hrush, the-gears being dimensioned so that the rotary brush will retats faster than the driving wheel. Une or the intermediate gears may be dispensed with but is here used so as to make the mechanism more sulostantial and halanced.

On top of nozzle 1 is a curved notched setting plate 311ior the adjusting hail handle 15, the notches of which are adapted to engage the longitudinal portion ofthe said bail 15.. From an inspectiono1 Figs. 1 and VT it will he noted the eccentrics 13 are mounted to the'rear side 01? the vertical center line oi the no zle casing and that as result when the bail 15 is tilted toward the rear of a nozzle casing it move larther and tar-- ther away from top of the said casing. This nialses it to increase the radius of the curve of the setting piece 31 on the back side of the nozzle casing in order that the bail 15 may engage therewith. Therefore, when adjusting eccentrics are turned to various positions by the bail 15,

the nozzle will be adjusted to Clifierent heights above the article to be cleaned by the eccentrically set driving and carrying wheels, the suction slot 29 being wide enough to take care of the horizontal shifting of the brush in such adjustment, It will be noted that the brush never changes its position relative to the driving wheels. Both wheels have on their peripheries the trio-- tion treads 32.

By this particular arrangement and structure, the gearing is substantially self contained within the driving wheel, whereby the same may be effectively adjusted by the adjusting eccentrics, which permit the come plete control of the relative position of the sweeper lorush and the nozzle mouth so that the relative sweeper and suction eilect can be completely regulated to meet any particular requirement.

With the train of gears that l have shown, a practical Peripheral speed ot the brush can be obtained without having the motor drive the'same, which usually means too high a speed for the brush and its connecting mechanism, causing a greater'wear and tear of the same and making the whole machine noisy.-

\l have shown my invention in the preferred loyme, but if desire'to it is capable of considerahle variation wi out departing from the "features of my vention,

Having thus described my invention, what l claim as new and desire to secure by ters Patent is:

' 1. ln a combined vacuum cleaner and can not sweeper, the combination ot" a nozzle casring, a rotary carpet sweeper brush supported within the nozzle casing having eccentric adjusting-means, floor wheels at the ends of said carpet sweeper hrush, a gearing dis posed within one or said wheels comprising beveled pinions carried by the outer shell thereof, a stationary beveled gear secured to the adjusting eccentric and meshing with the said pinions, and a driven beveled gear meshing with the said pinions at the opposite side and connected to drive the said hrush, coacting substantially as described.

2. Tu a combined vacuum cleaner and can pet sweeper, thecoinhination ot a nozzle prising beveled pinions carried by the outer shell thereof, a stationary beveled meshinu with the said pinions, and a driven my hand and seal in the presence of two wit= beveled gear meshing with the said pinions 'nesses, at the opposite side from said fixed beveled FRANCIS C. MASON. [he] gear and connected to drive the said brush, Witnesses: 5 as specified. ANGELA J. LAFFERTY? In Witness whereof, I have hereunto set FRED LINDNER, 

